Originally Posted by RC45
Not a redesign - reflash - back to stock  |
Well, the AP that COBB uses for tuning uses reflashes to load maps. So a reflash back to stock from the dealership would take all of 10 minutes to "fix"
Originally Posted by 79TA
Nissan has pushed the little 3.8 pretty far. I really doubt any big gains will be made with a tune by itself. Let's not forget that there's a slight possibility that it makes that much power already. (My guess as of now is something around 510 . . . with 15% drivetrain loss that would be about 434 to the wheels)
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Yeah, I'm just educatedly guessing. My car which is a 2.5L 4-Cyl makes 300 (230WHP) from the factory at 16 psi. I'd say thats pushing a 2.5 4banger pretty far, wouldnt you agree?
Now I'm on a very safe stage two tune with boost at 19PSI and some play in the timing and duty cycle of the boost solenoid... car is making 320WHP with an exhaust. (like 380 crank HP I'm guessing, not that it matters).
Based on those numbers, the higher displacement of the GT-R, the TT's and the extra two cylinders, I came up with the numbers I did before. Obviously because Nissan needs to make the car reliable as a street car, the engine has to be detuned a bit from what it could realistically run safely, in order to have that safety margin and pass emissions.
I betcha that right off the bat, just from boost and leaning out the tune a little bit (because its most likely on the super safe side) you could see some considerable gains. Add race gas or Methanol and push another 3-4 PSI and you will have a rocket.
You could also upgrade turbos like I said, perhaps twin Garret 30, 35 or 40R's. I think 35's would be amazing, but 30's for the response would be a good compromise.. even the 35's would spool quickly on a 3.8L V6..
I'm sure tuners are wetting their beds because they are so excited about the platform that Nissan has made for them...Dont be too surprised if you see piggyback or complete standalone ECU's within the next year...
If the car is making 500+ as it is tho, I can definitely see why you can say that Nissan has pushed a lot of power out of it.
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